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3 years ago

If the length of a ramp is increased, what will happen to the input force?

1 answer:

3 0

The input force will increase too because the more the ramp is increasing the more force is being put on the object going down the ramp... hope this helps ^-^

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a jetliner goes from rest to a takeoff speed of 162 mi/h in 39.5 s. what is the magnitude of its average acceleration?

irakobra [83]

Acceleration = V/t

First set velocity to m/s

V = 72.42 m/s

Now we divide velocity by time

A = 72.42/39.5
A = 1.83 m/s^2

3 0

3 years ago

A ball is thrown straight up from a bridge at a speed of 11.0 m/s. If it takes 5.5 seconds to hit the water below, what is the v

seropon [69]

Answer:

v = 42.92 m/s

Explanation:

Given,

initial speed of the ball, v = 11 m/s

time taken to hit the ground = 5.5 m/s

velocity of the ball just before it hit the ground, v = ?

time taken by the ball to reach the maximum height

using equation of motion

v = u + at

final velocity = 0 m/s

0 = 11 - 9.8 t

t = 1.12 s.

time taken by the ball to reach the water from the maximum height

t' - 5.5 -1.12 = 4.38 s

using equation of motion for the calculation of speed just before it hit the water.

v = u + a t

v = 0 + 9.8 x 4.38

v = 42.92 m/s

Velocity of the ball just before it reaches the water is equal to v = 42.92 m/s

3 0

3 years ago

imagine a horse pulling a cart. What would happen to the speed of the cart if several bags of cement were adding to the cart?

iogann1982 [59]

Assuming the power delivered by the horse does not change, the speed of the cart will decrease.
In fact, the power delivered by the horse is the work done by the horse (W) per unit time (t):
$P=\frac{W}{t}$
<span>If several bags are added to the cart, the horse must do more work to transport them. Therefore, W in the fraction increases. But if the power P of the horse is constant, then it means that the time t must increase as well. So, the horse will take more time to transport the car, and this means that the speed of the cart has decreased.</span>

7 0

3 years ago

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An 8.2 kg object accelerates at 8.0 m/s^2. What is the acceleration?

ZanzabumX [31]

Answer:

8.0m/s²

Explanation:

meters per second squared is a unit of acceleration so 8.0m/s² is the answer

6 0

2 years ago

Magnetism, reactivity, and fluorescence are three special properties used to identify minerals. Please select the best answer fr

astraxan [27]

Answer: True

Explanation: Following are the properties that are used to identify minerals:

(1) Color

(2) Hardness

(3) Magnetism : It is the property of mineral to attract or repel with other magnetic materials.

(4) Luster : It is the property that shows the surface is reflecting light or not.

(5) Reactivity: Reactivity is also responsible to identify mineral. How the mineral is reacting with acids, bases etc helps to identify type of minerals.

3 0

3 years ago

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